Solid rock foundation positioning and blasting and hydraulic spalling combined excavation construction method

A construction method and bursting technology, which is applied in blasting and other directions, can solve problems such as over-excavation, slow demolition speed, and difficult control of blasting operations, and achieve the effects of reducing construction costs, saving construction period, and reducing engineering volume

Active Publication Date: 2019-12-17
广西建工第五建筑工程集团有限公司
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AI Technical Summary

Problems solved by technology

[0002] The current excavation of hard rock foundations mostly uses the traditional crawler-type breaker for crushing and excavation, but the traditional crawler-type breaker has the following shortcomings for the excavation of hard rock foundations: first, the breaking speed is slow; First, the breaker is easily broken by vibration; third, the section size of the broken hard rock foundation is difficult to control
[0003] The second method to remove the hard rock foundation is blasting, but the blasting operation is difficult to control, and it is easy to cause over-excavation, which will incur a lot of cleaning and backfilling costs

Method used

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  • Solid rock foundation positioning and blasting and hydraulic spalling combined excavation construction method
  • Solid rock foundation positioning and blasting and hydraulic spalling combined excavation construction method
  • Solid rock foundation positioning and blasting and hydraulic spalling combined excavation construction method

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Embodiment Construction

[0039] A combined excavation method of positioning blasting and hydraulic expansion cracking for hard rock foundations, see figure 1 , including the following steps:

[0040] A. Construction preparation;

[0041] The contents of the construction preparation include:

[0042] (1) The drilling machinery, hydraulic expansion and cracking machinery, crawler backhoe excavator and breaker required by this construction method enter the site on time, and all construction machinery must have factory qualification certificates and annual inspection records;

[0043] (2) The water and electricity used at the construction site must be in place safely;

[0044] (3) Organize the technical force of the company and the project to familiarize and research the drawings;

[0045] (4) On-site construction workers need to enter the site on time and undergo three-level education and job training before qualified personnel can enter the construction site for practical operations.

[0046] B. BIM...

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Abstract

The invention provides a solid rock foundation positioning and blasting and hydraulic spalling combined excavation construction method which comprises the following steps of A construction preparation; B, drawing deepening based on a BIM technology; C, foundation position lofting; D, explosive mounting hole lofting; E, explosive mounting hole drilling; F, foundation middle position blasting; G, blasted gravel cleaning; H, spalling hole position lofting and spalling hole drilling; I, hydraulic spalling; J, crushing and cleaning of rocks in a foundation; and K, qualified foundation subsoil inspecting to complete excavation construction of the foundation. The invention provides the solid rock foundation positioning and blasting and hydraulic spalling combined excavation construction method which is a novel construction method, not only can improve the excavation speed of the solid rock foundation but also can ensure the excavation size of the solid rock foundation well, and is efficient,environmentally-friendly and energy-saving in the construction process.

Description

technical field [0001] The invention relates to a building construction method, in particular to a combined excavation construction method of hard rock foundation positioning blasting and hydraulic expansion cracking. Background technique [0002] The current excavation of hard rock foundations mostly uses the traditional crawler-type breaker for crushing and excavation, but the traditional crawler-type breaker has the following shortcomings for the excavation of hard rock foundations: first, the breaking speed is slow; It is that the breaker is easily broken by vibration; the third is that the cross-sectional size of the hard rock foundation to be broken is difficult to control. [0003] The second method to remove the hard rock foundation is blasting, but the blasting operation is difficult to control, and it is easy to cause over-excavation, which will incur a lot of cleaning and backfilling costs. Contents of the invention [0004] Aiming at the problems existing in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor 徐祥罗建全葛华王浩廖雪飞毛克亮
Owner 广西建工第五建筑工程集团有限公司
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